Saw-mill dog



(No Model.)

W. H. PROUTY.

G 0 D L L T. M W A S No,. 450,035. Patented Apr. '7, 1891.

ATTORNEYS UNITED STATES PATENT OFFIC VILLIAM I-I. PROUTY, OF\VORTHVILLE, NEW YORK.

SAW-MILL DOG.

SPECIFICATION forming part of Letters Patent No. 450,035, dated April 7,1891.

I Application filed July 31, 1890. Serial No.36 0,500. (No model.)

To (0% whom it may concern:

Be it known that 1, WILLIAM H. PROUTY, of Vorthville, in the county ofJefferson and State of New York, have invented a new and ImprovedSaw-Mill Dog, of which the following is a full, clear, and exactdescription.

The object of the invention is to provide a new and improved saw-milldog which is simple and durable in construction, can be readilyconnected with or disconnected from the log, and is adapted to engagethe log near the middle on top or on the last out.

The invention consists of a dog proper having two arms standing at rightangles and a block fitted to slide vertically and to turn and on whichthe said dog proper is mounted.

The invention also consists of certain parts and details andcombinations of the same, as will be hereinafter fully described, andthen pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improvement. Fig. 2 is a sectionalplan view of the same on the line 2 2 of Fig. 1. Fig. 8 is a transversesection of the same on the line 3 3 ofFig. 2, and Fig. 4 is aperspective view of the dog proper.

The head-block A of the saw-mill is provided with the usual knee 13,against which the log 0 is rolled, resting on the head-block bracket E,bolted or otherwise fastened to the A. In the rear of the knee B issecured the lower end of a vertically-arranged rod D, having its uppersquare end D fastened in a upper end of the knee B, near the front endof the same. On the rod D is mounted to turn and to slide a block F,having its lower part made square, and on two sides of which is fastenedthe dog proper G, provided with two arms G and G standing at rightangles to each other. The arms G and G2 are provided with the points Gand G respectively, adapted to engage the log 0. The arm G is somewhatlonger than the arm G and is adapted to engage the log near the middleon the top, while the shorter arm G is adapted to engage only the lastout of the log.

In the block F is formed an opening F, in

which is fitted a key H, adapted to rest with its inner surface againstthe rod D and adapted to be pressed against on its opposite or outerside by the cam I, formed on the fulcrum end of a lever J, fulcrumed onthe block F and extending into the recess F. The outer end of the leverJ is preferably weighted, so that the lever J in its normal positionstands about horizontally, thus pressing the cam I against the key H, sothat the latter is forced onto the rod D, and the block F is therebylocked in position on the said rod D.

The device is used as follows: As shown in Figs. 1 and 2, the long arm Gof the dog G engages with its point G the log 0 in the middle and on thetop, the block F being locked in place on the rod D by the lever Jengaging the key H. Now when it is desired to disconnect the dog properG from the 10g 0 after a number of cuts have been made from the log thenthe operator raises the lever J, so

that the cam I is disconnected from the key I-I, thereby unlocking theblock F from the rod D. XVhen the lever J stands in about a verticalposition, the operator pulls on the lever, so as to raise the block Fwith the dog G, thereby disengaging the point G from the log 0. When theoperator drops the lever J, the latter swings into a horizontalposition, so as to again lock the block F, with the dog G, in place,thus holding the dog ready for another log, if desired. When theoperator desires to make use of the short arm G2 to engage the last outon the log, he raises the lever J to unlock the block F from the rod D,and then gives a quarter-turn to the lever J, so as to turn the block Fon the rod D until the short arm G2 rests against the rear edge of thebracket E. \Vhen the operator now drops the block F, as previouslydescribed, the point G' of the arm G2 engages the last out 011 the log.It is understood that the block F, with the dog G and the lever J, issufficiently heavy, so that when dropped the respective point G or G ofthe dog proper engages the log 0 sufficiently to hold the latter inplace. It is further understood that when the arm G engages with itspoint G3 the log 0 then the said arm rests against the front side of theknee B or the bracket E, accord-- ing to the size of the log. In asimilar manner the arm G rests on the rear side of the knee B or thebracket E when the said arm is in use on the last cut of the log.

It will be seen that this saw-mill dog can be readily handled and lockedin place in either an engaged or disengaged position on the rod D.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. In a saw-mill dog, the combination, with arevoluble block fitted to slide, of a dog proper secured on the saidblock and having arms standing at right angles to each other,substantially as shown and described.

2. In a saw-mill dog, the combination, with a rod, of a revoluble blockfitted to slide on and adapted to be locked in place on the said rod anda dog proper secured on the said block and provided with two armsstanding at right angles to each otheiyeach having a point, and of whicharms one is longer than the other, substantially as shown and described.

3. In a sawmill dog, the combination, with a rod, of a revoluble blockfitted to slide on and adapted to be locked in place on the said rod,adog proper secured on the said block and provided with two arms standingat right angles to each other, each having a point, and of which armsone is longer than the other, and means, substantially as described, forlocking the said block on the said rod, substantially as shown anddescribed.

WILLIAM H. PROUTY. Witnesses:

FRED E. WRIGHT, \V. W. REED.

